Downloading and installing the (specifically when it is split into parts like "part2.rar") requires careful handling to ensure a successful system update. This process is often necessary for resolving boot issues or network connectivity problems. How to Handle Multi-Part Firmware Files
When a firmware file is split into multiple parts (e.g., part1.rar, part2.rar):
: Once complete, remove the AC power again for at least 10 seconds, remove the USB drive, and then plug the TV back in to finish the setup.